Ice-cream freezer.



"No. 883,064. PATENTED MAR. 24, 1908.

' T. L. VALERIUS.

ICE CREAM FREEZER.

APPLICATION FILED JULY 2a, 1906.

I ingice cream'and fthe like may becarried on UNITED STATES PATENT ornon THEODORE L. VALERIUS, "OF FORT ATKINSON, WISCONSIN, ASSIGNOR TO THECREAMERY PACKAGE MFG. COMPANY,

ICE-CREAM FREEZER.

OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

Application filed-July 28, 1906. Serial No. 328,222.

Tooll whom it may concern:

Be it known that I, THEODORE L. VALE RIUs, a citizen of Fort Atkinson,county of Jeiferson, and State of YVisconsin, have invented a certainnew, useful, and Improved IceCream Freezer,

, a full, clear, and exact description, such as will enable othersskilled in the art to which it appertains to make and use the same.

My inventionrelates to the art of manufacturing ice cream and the likeand has special reference to improvements in ice cream freezers.

The primary-object of my invention is to provide means whereby a liquidsuch as ice eream custard, may be reducedtoa semifrozen state forsubsequent solidification in.

' suitable storage vessels.

' tion A further object of the invention is to provide apparatus wherebythe process of freezoontinuously.

Other and particular objects of the invenare, to reduce the cost oflarge capacity ice cream freezers, to reduce the labor of operating icecream freezers, to reduce the power required for the operation of theapparatus, to make it easier to maintain the apparatus in sanitarycondition; and to insure a gain in the volume of the product of theapparatus; all in comparison with present-day and in 1ce cream freezers.

My invention consists generally in an ice cream freezer comprising anexternally cooled liquid vessel upon a vertical axis, and open at thetop,in combination with a reversel movable tionary dasher providedwithin said vessel, and a means at the top of said vessel for receivingthe semi-frozen liquid therefrom.

My mvention also consists in various details of construction and inparts, all as hereinafter described, ticularly pointed out in the claimsMy invention will be more readily understood by reference to theaccompanying drawings forming apart of this speclfication,

and parmy invention is shown elevation.

My novel ice cream freezer is of such, construction that the operationoffreezing ice cream or the like therein may be carried on continuously;that is, the custard is fed or supplied to the freezer in a continuousin vertical, sectiona of which the following is end of the shaft 2;

.mounted for rotation,

or sta combinations of which an ice cream freezer embodying.

stream, and the freezer continuously discharges liquid in a semi-frozencondition. This freezer, may, therefore, be employed singly, or may becombined in tandem with Referring to the drawings, A represents 1 thefreezer can or vessel; this is cy ndrical Patented March 24, 1908.

in form, andis open atv the top; the can is mounted upon a verticalshaft 2-, held in bearings 3 and tin the base B. The shaft 2 is rotatedby means of beveled gears 5 and 6 upon shaft 2 and the power shaft 7respectively. The can is rotated at a slow speedi The ring 8 upon theupper part of the can engages a plurality of anti-friction rollers 9,'fixed on the base or frame and serving'to center the 11 per part of thecan. It should be explaine thatthese are not essential to the mechanism,provided shaft 2 is made sufficiently strong. stated above, iscylindrical in form; its bot- 'tomis formed by the disk A, on the upperthe inner wall A of the can is ofthin sheet metal, preferably tinnedcopper. This inner wall is surrounded by a jacket forming an annularspace A that isfilled with -brine or other refrigerant; the outer wall Ais composed of several thicknesses of sheet metal, including a cylinderof as a tube and by providing the bearing 4 with a cavity 4 which is incommunication with the duct '2 within the shaft. The brine passes upwardthrough the shaft 2 and from the cavity in the upper end thereo isconducted to the bottom of the jacket or space A by two short pipes orducts 2". Overflow, or return the jacket or space A extend from thetopthereof, through the bottom of the jacket,

and are connected with a pipe 11, axially arranged within the hollowshaft 2. This pipe,

The freezer can, as-

pipes 10, arranged within steam to the-jacket 11, extends through thelower end of the nected with the-bottom of the tank, and with 1 thehollow bearing 4, through the medium of pipe 12, serves to maintain aconstant circulation of brine through the brine ]fl0l6t 0f the can. Asteam pipe 13is connected w th the brine pipe 12 for the purpose ofadmltting of the can when required to raise the temperature of thefreezer to free the walls thereof from caked cream, or to sterilize thesame after the can has been cleaned.

The dasher, D, of my machine 18 preferably stationary. It comprises twowings Di, the edges of which closely approach the inner surface of therotating can, to clear said surface of the freezing cream. The wings arecast or otherwise secured upon a hollow stem The lower end of the stemisseated in a socket 14, provided for it in the bottom of the can, and theupper end of the stemv 1s held by two arms D which are secured upon thestationary frame of the machine. The custard to be frozen flows into theupper end of the hollow stem D and descends therebottom of the canthrough, entering the through perforations D in the lower end of thestem. It will be noted that the wings D are provided with top scrapersor lugs D which serve to clear the top or upper edge of the can.

As will be better understood from the description of the operation of mymachine, which charged over the upper edge or run of the can. It isreceived by the annular cup or hollow ring R, which surrounds the upperend of the can, underlying the projecting flange A; Said ring forms apart of the stationary frame of the machine; its bottom 1s inclined andthe ice cream which falls into the ring is discharged therefrom througha spout R, arranged at its lowermost point. The spout B may deliver thepartially frozen liquid to another freezer, or to a packing can or moldM, which rests upon a bracket M attached to the base of the machine.

1f it is found that the agitation to which the cream is subjected isinsufficient to increase adequately the volume of the frozen product,compressed'air may be blown into the lower part'of the freezer. To thisend I sometimes employ a small air-pipe, which extends to the lower endof thehollow ste of the dasher.

The operation of the described ice cream freezer is as follows: Aquantity of cold brine having been prepared in the tank T, the pump isset into operation to circulate the 11 rotates in the follows: thesemi-frohen liquid is dis-- brine through the jacket of the freezer can.The brine rises into the jacket through the hollow shaft 2 and the pipes2", and returns to the tank through the pipes 10, 11, leading from thetop of the jacket. The can is then placed in rotation and a supply ofcustard is admitted from the nozzle or pipe C. Contact with the coldwalls of the freezer can, and the continuous agitation produced by therotation of the can, coupled with the interference of the dasher, causesthe custard to congeal, and as the custard continues to enter the vesselthe lighter frozen portions rise to the top of the can. From thence thesemi-frozen liquid is dischar ed across the upper part of the can, andfa ls into the receiver or hollow ring R. The degree towhich the liquidwill be frozen depends upon the speed with which the can is rotated, theefliciency of the brine circulation, and the quantity of custard whichis fed to the can.- The fresh custard, entering the lower part of thecan, serves to float or lift the frozen cream, hence, the greater thesupply of custard, the more rapid will be the discharge of the partiallyfrozen liquid at the top of the can. From these facts, it will beobvious that the cream may be delivered from the machine in any desiredstate or condition.

As various modifications of my invention will readily suggest themselvesto one skilled in the art, I do not confine the invention to thespecific structure herein shown and described.

Having thus described my invention, I claim as new, and desire to secureby Letters Patent .1, In an ice cream freezer, an externally cooledcylindrical freezing vessel mounted for rotation upon a vertical axisand open at the top, in combination with stirrin and scraplng meansextending downward through the open top of said vessel, means forsupplying freezing fluid to the walls of said vessel, and an annularreceiver sur-f rounding the up er end of said vessel to receivepartially rozen ice cream from the rim or upper edge thereof.

2. In an ice cream freezer, an externally cooled cylindrical freezinvessel mounted for rotation upon a vertica axis and open at the top,being rovided with an outwardly flared. upper e ge or rim, incombination with means for supplying freezing fluid to the walls of saidvessel, stirring and scraping means arranged in said vessel to clear itswalls and agitate its contents, and means continuously operating toclear the rim of said vessel.

3. In an ice cream freezer, an externally cooled cylindrical freezingvessel mounted for rotation upon a; vertical axis and provided with anoutwardly turned or flared uper edge or rim, in combination with meansor supplying freezing fluid to the walls of said vessel, means forsupplying the liquid to be cooled cylindrical freezing vessel mountedfor rotation upon a vertical axis and having an outwardly turned orflared upper edge or rim, in combination with a dasher and scraperwithin said vessel and stationary means at the rim of the vessel'forreceiving and discharging the semi-frozen liquid therefrom,substantlally, as described.

5. In an ice cream freezer a cylindrical freezing vessel having a hollowwall and provided with an outwardly flared upper edge or rim, incombination with means for ro-. tating said vessel upon its verticalaxis, means for circulating freezing fluid in the hollow wall ofthe-vessel while the latter is in rotation, a dasher in said vessel, andmeans at the top of the vessel to receive semifrozen li uid from the rimthereof, substantially as described.

vessel, (provided with an insulated outer wall an a heat conductinginner wall, separated by a liquid space, in combination with means forrotating said vessel upon its.

vertical axis, means for circulating a freezing liquid in the spacebetween the. walls of said vessel, a dasher within said vessel, andmeans at the top of said ,vessel for continuously supplying iquidthereto and discharg ing liqui therefrom, substantially as describe 7.In an ice cream freezer, a cylindrical vessel, rovided with an insulatedouter wall and a heat conducting inner wall, sep' arated by a liquidspace, in combination with means for rotating saidyessel upon itsvertical axis, means for circulating a freezin liquid in the spacebetween the walls of sai vessel, a dasher within'said vessel, meanstforcontinuously supplying custard to said vessel, and means at the topthereof for continuously dischargin semi-frozen liquid therefrom,substantially as described. fl

8. In an ice cream freezer, a cylindrical vessel, provided with aninsulated outer Wall and a heat conducting inner Wall, separated by aliquid space, in combination with means for rotating said vessel uponits vertical axis,

means for circulating a freezing liquid in the space between the wallsof said vessel, a dasher within said vessel, means for supplying custardto said vessel and an annular receiver surrounding the upper part of thesaid vessel, as and for the purpose specified.

9. In an ice cream freezer, a cylindrical freezing vessel having hollowwalls and open at the top, in combination With means for rotating saidvessel upon its axis, means for circulating freezing fluid in the wallsof the vessel, a central custard inlet ipe extending to the bottom ofthe vessel, a dasher thereon, and means at the top of the vesselforreceiving semi-frozen liquid therefrom, substantially as described.

10. In an ice cream freezer, a double walled cylindrical freezingvessel, mounted for rotation upon its vertical axis, in combination witha dasher provided in said vessel, means at the top of the vessel forreceiving and discharging semi-frozen liquid therefrom, means forsupplying custard to the vessel, means for circulating frozen liquid inthe Walls of said vessel during the rotation thereof, and the outer wallof said vessel being externally insulated, substantially as described.

11. In an ice creani freezer, an externally insulated double walled canmountedfor rotation on a Vertical axis and 0 en at the top, incombination with means or circulating freezing liquid in the spacebetween the walls of said can while the same is in rotation, means forrotating said can, a central custard inlet pipe or duct, a dasher, andperipheral W receiving means at. the top of said can, sub- 6.. In an icecream freezer, a cylindrical stantially as described.

' 12. In an ice cream freezer, an externally cooled can open at the topand mounted for rotation on a vertical axis, a dasher, a central custardinlet'pipe or duct, an annular flange at the top of said can, and anannular receiver for the semi-frozen liquid underlying said flange,substantially as described.

13. In an ice cream freezer, an externally cooled can open at the topand mounted for rotation on a vertical axis, a, dasher, a centralcustard inlet pipe or duct, an annular flange .at the top of said can,and an annular receiver for the semifrozen liquid underlying saidflange, said annular receiver having an inclined bottom and a dischargespout, substantially 'as'described.

14. In an ice cream freezer, an externally cooled can mounted .forrotation upon a vertical axis and open at the top, in combination withmeans for rotating said can, a central custard inlet pipe or duct, adasher, an

annular receiving trough surrounding the upper part of said can beneaththe rim thereof and adapted to receive the semi-frozen liquid from therim of said can, substantially as described.

15. In an ice cream freezer, an externally cooled can mounted forrotation upon a'vertical axis and open at the top, in combination withmeans for rotating said can, a central custard inlet pipe or duct, adasher, an

annular receiving trough surrounding the upper part of said can beneaththe rim thereof and means upon said dasher for discharging thesemi-frozen cream from the rim of the can into said trough,substantially as described.

16. In an ice cream freezer, an 0 en top ed freezing can in combinationwit a das er therein, said can and dasher being relatively E Intestimony whereof, I have hereunto set revoluble, means forrefrigerating the conmy hand, this 25th day of July, 1906, in the tentsdof salid can, an annular trcugh sgrpresence of two subscribingWitnesses. roun in t e u er ortion 0 sai can e- 5 neath th e rim tl iei'eof and means for clearing THEODORE VALERIUS u the rim of the can todischarge semi-frozen Witnesses: 7

liquid from said rim into said trough, sub- IRVING R. HIPPENMEYER,stantially as described. 7 e SANFORD P. STARKs.

